Karak Gediya is a traditional fishing device mainly used in the lagoon and reservoir (tank) fisheries of Sri Lanka. It is a simple, low-cost fishing gear that can be made entirely from locally available natural materials, requiring little or no financial investment. In the past, it was widely used by local fishermen to catch both fish and shrimp, particularly in shallow waters around mangrove forests where aquatic organisms are abundant. The device is placed in suitable locations, and fishermen remain nearby while waiting for fish or shrimp to enter or become trapped. Unlike fishing methods that require travelling across large areas of water, the Karak Gediya allows fishermen to fish from a single location. According to local folklore, the name “Karak Gediya” originated because fishermen using this gear stay in one place rather than moving around the lagoon during fishing.